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Summary: Constants | Inherited Constants | Fields | Ctors | Methods | Inherited Methods

# AccessibilityWindowInfo

`public final class AccessibilityWindowInfo`
`extends Object` `implements Parcelable`

java.lang.Object
↳ | android.view.accessibility.AccessibilityWindowInfo

This class represents a state snapshot of a window for accessibility purposes. The screen content contains one or more windows where some windows can be descendants of other windows, which is the windows are hierarchically ordered. Note that there is no root window. Hence, the screen content can be seen as a collection of window trees.

## Summary

### Constants
`int` | `TYPE_ACCESSIBILITY_OVERLAY` Window type: Windows that are overlaid only by an `AccessibilityService` for interception of user interactions without changing the windows an accessibility service can introspect.
`int` | `TYPE_APPLICATION` Window type: This is an application window.
`int` | `TYPE_INPUT_METHOD` Window type: This is an input method window.
`int` | `TYPE_SPLIT_SCREEN_DIVIDER` Window type: A system window used to divide the screen in split-screen mode.
`int` | `TYPE_SYSTEM` Window type: This is an system window.

### Inherited constants
From interface `android.os.Parcelable`
`int` | `CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int` | `PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

### Fields
`public static final Creator<AccessibilityWindowInfo>` | `CREATOR`

### Public constructors
`AccessibilityWindowInfo()` Creates a new `AccessibilityWindowInfo`.
`AccessibilityWindowInfo(AccessibilityWindowInfo info)` Copy constructor.

### Public methods
`int` | `describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`AccessibilityNodeInfo` | `getAnchor()` Gets the node that anchors this window to another.
`void` | `getBoundsInScreen(Rect outBounds)` Gets the bounds of this window in the screen.
`AccessibilityWindowInfo` | `getChild(int index)` Gets the child window at a given index.
`int` | `getChildCount()` Gets the number of child windows.
`int` | `getDisplayId()` Returns the ID of the display this window is on, for use with `DisplayManager.getDisplay(int)`.
`int` | `getId()` Gets the unique window id.
`int` | `getLayer()` Gets the layer which determines the Z-order of the window.
`AccessibilityWindowInfo` | `getParent()` Gets the parent window.
`void` | `getRegionInScreen(Region outRegion)` Gets the touchable region of this window in the screen.
`AccessibilityNodeInfo` | `getRoot()` Gets the root node in the window's hierarchy.
`CharSequence` | `getTitle()` Gets the title of the window.
`int` | `getType()` Gets the type of the window.
`int` | `hashCode()` Returns a hash code value for the object.
`boolean` | `isAccessibilityFocused()` Gets if this window has accessibility focus.
`boolean` | `isActive()` Gets if this window is active.
`boolean` | `isFocused()` Gets if this window has input focus.
`boolean` | `isInPictureInPictureMode()` Check if the window is in picture-in-picture mode.
`static AccessibilityWindowInfo` | `obtain()` Returns a cached instance if such is available or a new one is created.
`static AccessibilityWindowInfo` | `obtain(AccessibilityWindowInfo info)` Returns a cached instance if such is available or a new one is created.
`void` | `recycle()` Return an instance back to be reused.
`String` | `toString()` Returns a string representation of the object.
`void` | `writeToParcel(Parcel parcel, int flags)` Flatten this object in to a Parcel.

### Inherited methods
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
From interface `android.os.Parcelable`
`abstract int` | `describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void` | `writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

## Constants

### TYPE_ACCESSIBILITY_OVERLAY

    public static final int TYPE_ACCESSIBILITY_OVERLAY

Window type: Windows that are overlaid only by an `AccessibilityService` for interception of user interactions without changing the windows an accessibility service can introspect. In particular, an accessibility service can introspect only windows that a sighted user can interact with which they can touch these windows or can type into these windows. For example, if there is a full screen accessibility overlay that is touchable, the windows below it will be introspectable by an accessibility service regardless they are covered by a touchable window.

Constant Value: 4 (0x00000004)

### TYPE_APPLICATION

    public static final int TYPE_APPLICATION

Window type: This is an application window. Such a window shows UI for interacting with an application.

Constant Value: 1 (0x00000001)

### TYPE_INPUT_METHOD

    public static final int TYPE_INPUT_METHOD

Window type: This is an input method window. Such a window shows UI for inputting text such as keyboard, suggestions, etc.

Constant Value: 2 (0x00000002)

### TYPE_SPLIT_SCREEN_DIVIDER

    public static final int TYPE_SPLIT_SCREEN_DIVIDER

Window type: A system window used to divide the screen in split-screen mode. This type of window is present only in split-screen mode.

Constant Value: 5 (0x00000005)

### TYPE_SYSTEM

    public static final int TYPE_SYSTEM

Window type: This is an system window. Such a window shows UI for interacting with the system.

Constant Value: 3 (0x00000003)

## Fields

### CREATOR

    public static final Creator<AccessibilityWindowInfo> CREATOR

## Public constructors

### AccessibilityWindowInfo

    public AccessibilityWindowInfo ()

Creates a new `AccessibilityWindowInfo`.

### AccessibilityWindowInfo

    public AccessibilityWindowInfo (AccessibilityWindowInfo info)

Copy constructor. Creates a new `AccessibilityWindowInfo`, and this new instance is initialized from given `info`.

Parameters
`info` | `AccessibilityWindowInfo`: The other info. This value cannot be `null`.

## Public methods

### describeContents

    public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of `writeToParcel(android.os.Parcel, int)`, the return value of this method must include the `CONTENTS_FILE_DESCRIPTOR` bit.

Returns
`int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

### equals

    public boolean equals (Object obj)

Indicates whether some other object is "equal to" this one.

The `equals` method implements an equivalence relation on non-null object references:

- It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`.
- It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`.
- It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`.
- It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified.
- For any non-null reference value `x`, `x.equals(null)` should return `false`.

The `equals` method for class `Object` implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values `x` and `y`, this method returns `true` if and only if `x` and `y` refer to the same object (`x == y` has the value `true`).

Note that it is generally necessary to override the `hashCode` method whenever this method is overridden, so as to maintain the general contract for the `hashCode` method, which states that equal objects must have equal hash codes.

Parameters
`obj` | `Object`: the reference object with which to compare.

Returns
`boolean` | `true` if this object is the same as the obj argument; `false` otherwise.

### getAnchor

    public AccessibilityNodeInfo getAnchor ()

Gets the node that anchors this window to another.

Returns
`AccessibilityNodeInfo` | The anchor node, or `null` if none exists.

### getBoundsInScreen

    public void getBoundsInScreen (Rect outBounds)

Gets the bounds of this window in the screen. This is equivalent to get the bounds of the Region from `getRegionInScreen(android.graphics.Region)`.

Parameters
`outBounds` | `Rect`: The out window bounds.

### getChild

    public AccessibilityWindowInfo getChild (int index)

Gets the child window at a given index.

Parameters
`index` | `int`: The index.

Returns
`AccessibilityWindowInfo` | The child.

### getChildCount

    public int getChildCount ()

Gets the number of child windows.

Returns
`int` | The child count.

### getDisplayId

    public int getDisplayId ()

Returns the ID of the display this window is on, for use with `DisplayManager.getDisplay(int)`.

Returns
`int` | The logical display id.

### getId

    public int getId ()

Gets the unique window id.

Returns
`int` | windowId The window id.

### getLayer

    public int getLayer ()

Gets the layer which determines the Z-order of the window. Windows with greater layer appear on top of windows with lesser layer.

Returns
`int` | The window layer.

### getParent

    public AccessibilityWindowInfo getParent ()

Gets the parent window.

Returns
`AccessibilityWindowInfo` | The parent window, or `null` if none exists.

### getRegionInScreen

    public void getRegionInScreen (Region outRegion)

Gets the touchable region of this window in the screen.

Parameters
`outRegion` | `Region`: The out window region. This value cannot be `null`.

### getRoot

    public AccessibilityNodeInfo getRoot ()

Gets the root node in the window's hierarchy.

Returns
`AccessibilityNodeInfo` | The root node.

### getTitle

    public CharSequence getTitle ()

Gets the title of the window.

Returns
`CharSequence` | The title of the window, or `null` if none is available.

### getType

    public int getType ()

Gets the type of the window.

Returns
`int` | The type.

See also:

- `TYPE_APPLICATION`
- `TYPE_INPUT_METHOD`
- `TYPE_SYSTEM`
- `TYPE_ACCESSIBILITY_OVERLAY`

### hashCode

    public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by `HashMap`.

The general contract of `hashCode` is:

- Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
- If two objects are equal according to the `equals(Object)` method, then calling the `hashCode` method on each of the two objects must produce the same integer result.
- It is not required that if two objects are unequal according to the `equals(java.lang.Object)` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class `Object` does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

Returns
`int` | a hash code value for this object.

### isAccessibilityFocused

    public boolean isAccessibilityFocused ()

Gets if this window has accessibility focus.

Returns
`boolean` | Whether has accessibility focus.

### isActive

    public boolean isActive ()

Gets if this window is active. An active window is the one the user is currently touching or the window has input focus and the user is not touching any window.

Returns
`boolean` | Whether this is the active window.

### isFocused

    public boolean isFocused ()

Gets if this window has input focus.

Returns
`boolean` | Whether has input focus.

### isInPictureInPictureMode

    public boolean isInPictureInPictureMode ()

Check if the window is in picture-in-picture mode.

Returns
`boolean` | `true` if the window is in picture-in-picture mode, `false` otherwise.

### obtain

    public static AccessibilityWindowInfo obtain ()

Returns a cached instance if such is available or a new one is created.

In most situations object pooling is not beneficial. Create a new instance using the constructor `AccessibilityWindowInfo()` instead.

Returns
`AccessibilityWindowInfo` | An instance.

### obtain

    public static AccessibilityWindowInfo obtain (AccessibilityWindowInfo info)

Returns a cached instance if such is available or a new one is created. The returned instance is initialized from the given `info`.

In most situations object pooling is not beneficial. Create a new instance using the constructor `AccessibilityWindowInfo(android.view.accessibility.AccessibilityWindowInfo)` instead.

Parameters
`info` | `AccessibilityWindowInfo`: The other info.

Returns
`AccessibilityWindowInfo` | An instance.

### recycle

    public void recycle ()

Return an instance back to be reused.

Note: You must not touch the object after calling this function.

In most situations object pooling is not beneficial, and recycling is not necessary.

Throws
`IllegalStateException` | If the info is already recycled.

### toString

    public String toString ()

Returns a string representation of the object. In general, the `toString` method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The `toString` method for class `Object` returns a string consisting of the name of the class of which the object is an instance, the at-sign character ``@`', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

>      getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns
`String` | a string representation of the object.

### writeToParcel

    public void writeToParcel (Parcel parcel,
                    int flags)

Flatten this object in to a Parcel.

Parameters
`parcel` | `Parcel`: The Parcel in which the object should be written.
`flags` | `int`: Additional flags about how the object should be written. May be 0 or `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES

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